1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
# ========================================================================== #
# #
# KVMD - The main Pi-KVM daemon. #
# #
# Copyright (C) 2018 Maxim Devaev <[email protected]> #
# #
# This program is free software: you can redistribute it and/or modify #
# it under the terms of the GNU General Public License as published by #
# the Free Software Foundation, either version 3 of the License, or #
# (at your option) any later version. #
# #
# This program is distributed in the hope that it will be useful, #
# but WITHOUT ANY WARRANTY; without even the implied warranty of #
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
# GNU General Public License for more details. #
# #
# You should have received a copy of the GNU General Public License #
# along with this program. If not, see <https://www.gnu.org/licenses/>. #
# #
# ========================================================================== #
import re
from typing import List
from typing import Callable
from typing import NoReturn
from typing import Any
# =====
class ValidatorError(ValueError):
pass
# =====
def raise_error(arg: Any, name: str, hide: bool=False) -> NoReturn:
arg_str = " "
if not hide:
arg_str = (" %r " if isinstance(arg, (str, bytes)) else " '%s' ") % (arg)
raise ValidatorError("The argument" + arg_str + "is not a valid " + name)
def check_not_none(arg: Any, name: str) -> Any:
if arg is None:
raise ValidatorError("Empty argument is not a valid %s" % (name))
return arg
def check_not_none_string(arg: Any, name: str, strip: bool=True) -> str:
arg = str(check_not_none(arg, name))
if strip:
arg = arg.strip()
return arg
def check_in_list(arg: Any, name: str, variants: List) -> Any:
if arg not in variants:
raise_error(arg, name)
return arg
def check_string_in_list(arg: Any, name: str, variants: List[str], lower: bool=True) -> Any:
arg = check_not_none_string(arg, name)
if lower:
arg = arg.lower()
return check_in_list(arg, name, variants)
def check_re_match(arg: Any, name: str, pattern: str, strip: bool=True, hide: bool=False) -> str:
arg = check_not_none_string(arg, name, strip=strip)
if re.match(pattern, arg, flags=re.MULTILINE) is None:
raise_error(arg, name, hide=hide)
return arg
def check_any(arg: Any, name: str, validators: List[Callable[[Any], Any]]) -> Any:
for validator in validators:
try:
return validator(arg)
except Exception:
pass
raise_error(arg, name)
|
